books.google.com - All persons associated with the operation of military aircraft are exposed at one time or another to hazardous noise. In past years attention was directed only to the noise problems encountered by aircrew members, namely, possible noise-induced hearing loss, excessive fatigue, and difficulty of voice...https://books.google.com/books/about/Aircraft_Noise.html?id=ZpggAAAAMAAJ&utm_source=gb-gplus-shareAircraft Noise

Aircraft Noise

All persons associated with the operation of military aircraft are exposed at one time or another to hazardous noise. In past years attention was directed only to the noise problems encountered by aircrew members, namely, possible noise-induced hearing loss, excessive fatigue, and difficulty of voice communication. Air-Force-wide adoption of the turbojet-powered aircraft has prompted the giving of special attention to the hazardous noise environment of men working on and near aircraft on the ground. While aircrew members of some aircraft are exposed to high-intensity noise levels, the aircraft ground maintenance crews receive most of the hazardous noise exposures.